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07-28-2017, 06:29 AM
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#1
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Senior Member
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 7,184
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Does a Diesel engine use any oil between changes
My Silverado has 115,000 miles and I have noticed the dmax uses a little oil. Is that okay or is it a sign for me to trade it
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07-28-2017, 06:45 AM
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#2
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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What are your oil change intervals? Do you use 5w40 synthetic? How much oil is used in that interval? Have you replaced the air filter?
Extended intervals, clogged air cleaner, and a failed turbo seal can all cause oil consumption. In a 5,000mi interval .5 to 1 qt can be expected depending on use.
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*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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07-28-2017, 06:55 AM
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#3
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Senior Member
Join Date: Jun 2017
Posts: 149
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2006 Dodge Diesel with 200K+ mile....Zero oil use....But then again, it's a Cummins.......Inline, 4 stroke, 6 cylinders are inherently stable and usually will afford better durability than a V8......
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07-28-2017, 07:15 AM
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#4
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Senior Member
Join Date: May 2017
Posts: 5,712
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Quote:
Originally Posted by RB19RR
2006 Dodge Diesel with 200K+ mile....Zero oil use....But then again, it's a Cummins.......Inline, 4 stroke, 6 cylinders are inherently stable and usually will afford better durability than a V8......
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Probability of "Zero usage" is extremely low due to a very thin film of oil that gets burn off from the cylinder on every power stroke of the engine. The only way on some engines, you would have to measure exactly how much went in...to how much came out. Wouldn't be surprised to see a 1/4 of a gt. difference every oil change...some will burn a full qt.
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07-28-2017, 07:26 AM
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#5
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Senior Member
Join Date: Feb 2017
Location: San Francisco Bay Area
Posts: 439
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My Duramax never gets low on oil but I also never measure whats coming out and compare it to whats going in . Im sure it uses some but when you have 2.5 gallons of oil in the crank case losing a quart is like nothing .lol Id say a little bit of oil consumption is pretty normal .
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07-28-2017, 07:29 AM
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#6
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Senior Member
Join Date: Jun 2017
Posts: 149
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Quote:
Probability of "Zero usage" is extremely low due to a very thin film of oil that gets burn off from the cylinder on every power stroke of the engine.
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True....Never measured it, but just about fills the two jugs plus a bit of a quart the new oil came in.
Rotella synthetic every 10-12k miles.
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07-28-2017, 07:57 AM
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#7
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Senior Member
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 7,184
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Quote:
Originally Posted by 05CrewDually
What are your oil change intervals? Do you use 5w40 synthetic? How much oil is used in that interval? Have you replaced the air filter?
Extended intervals, clogged air cleaner, and a failed turbo seal can all cause oil consumption. In a 5,000mi interval .5 to 1 qt can be expected depending on use.
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How often should the air filter be changed? I use synthetic oil, always have
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07-28-2017, 08:01 AM
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#8
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Senior Member
Join Date: Jan 2016
Location: Carlisle, Arkansas
Posts: 1,387
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All engines use some oil, just some more than others.
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07-28-2017, 08:03 AM
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#9
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Senior Member
Join Date: Dec 2013
Posts: 806
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Quote:
Originally Posted by spock123
My Silverado has 115,000 miles and I have noticed the dmax uses a little oil. Is that okay or is it a sign for me to trade it
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Define a little. The only time I ever topped off mine was once, about 1/2 to 1 quart, wasted my time.
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2006 2500HD CCSB 2WD 2014 Crusader 285RET
Nights camped in 2013 - not enough!, 2014 37, 2015 40, 2016 39, 2017 38, 2018 36, 2019 37, 2020 26, 2021 28
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07-28-2017, 08:12 AM
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#10
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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It really depends on the use and if ran in dusty conditions. If you have the original filter with 50 or 100 thousand miles I'd say it's time. Lol
Many trucks now a days have a filter minder that if the filter is getting clogged it will show on the gauge.
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*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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07-28-2017, 08:14 AM
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#11
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Senior Member
Join Date: Jul 2009
Location: Warsaw,NC
Posts: 7,184
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Quote:
Originally Posted by Crusadernoob
Define a little. The only time I ever topped off mine was once, about 1/2 to 1 quart, wasted my time.
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About 1/2 to a quart. It's only when pulling the camper that I have noticed it
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07-28-2017, 08:20 AM
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#12
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Senior Member
Join Date: Oct 2015
Posts: 1,502
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I'd hazard a guess that most oil "usage" in a diesel is from oil in blowby gases in the PCV system. My provent 200 on one of my diesels fills up with almost 8 oz of oil every 5k miles.
When towing, boost and combustion pressures are higher resulting in more blowby which contains oil droplets.
I usually lose 1/3-3/4 quart between 10k mile oil change intervals on my diesels and most of that is accounted for in the crankcase ventilation "catch can".
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07-28-2017, 08:20 AM
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#13
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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Quote:
Originally Posted by spock123
About 1/2 to a quart. It's only when pulling the camper that I have noticed it
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If that's over a 3-5000mi interval you're fine.
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*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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07-28-2017, 08:22 AM
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#14
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Broken Toe
Join Date: Jan 2012
Location: Imperial (St. Louis) MO
Posts: 3,745
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Yes, diesels will consume some oil. The PCV system mandates that oily vapor from the crank-case gets consumed. It's when they start gaining oil that things are going bad. Usually means a bad injector is allowing fuel in to the engine oil, diluting it.
My current 2007 Toyota Rav4 is actually under recall for excessive oil use. It takes a quart every other fill up. (Maybe 650 miles) that seem like a lot, but I'm hear to tell you that little engine runs like a dream at 230K miles. I have always held that once and engine starts burning a little oil, it will last a long long time. Everything in the top end is getting well lubricated.
I wouldnt sweat it.
Tim
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07-28-2017, 08:28 AM
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#15
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Senior Member
Join Date: Dec 2013
Posts: 806
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Quote:
Originally Posted by 05CrewDually
It really depends on the use and if ran in dusty conditions. If you have the original filter with 50 or 100 thousand miles I'd say it's time. Lol
Many trucks now a days have a filter minder that if the filter is getting clogged it will show on the gauge.
Attachment 146335
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I have seen a lot of dirty filters with these "consumer feel good" indicators not showing it's time to change. With that being said it will open up the whole debate of a partially loaded filter stops more dirt than a new one due to the restriction and smaller passages. I would still bang it out on a bench.
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2006 2500HD CCSB 2WD 2014 Crusader 285RET
Nights camped in 2013 - not enough!, 2014 37, 2015 40, 2016 39, 2017 38, 2018 36, 2019 37, 2020 26, 2021 28
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07-28-2017, 08:32 AM
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#16
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Senior Member
Join Date: Dec 2013
Posts: 806
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Quote:
Originally Posted by spock123
About 1/2 to a quart. It's only when pulling the camper that I have noticed it
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Don't sweat it. Remember your engine holds 10 quarts.
__________________
2006 2500HD CCSB 2WD 2014 Crusader 285RET
Nights camped in 2013 - not enough!, 2014 37, 2015 40, 2016 39, 2017 38, 2018 36, 2019 37, 2020 26, 2021 28
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07-28-2017, 08:43 AM
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#17
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Senior Member
Join Date: Dec 2013
Posts: 806
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Quote:
Originally Posted by spock123
My Silverado has 115,000 miles and I have noticed the dmax uses a little oil. Is that okay or is it a sign for me to trade it
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Wait a minute, it's a 2012 3500HD SRW? Yeah, those things are known for oil consumption, where did you say you would trade it in? I'll meet you there!
By the way, what color is it?
__________________
2006 2500HD CCSB 2WD 2014 Crusader 285RET
Nights camped in 2013 - not enough!, 2014 37, 2015 40, 2016 39, 2017 38, 2018 36, 2019 37, 2020 26, 2021 28
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07-28-2017, 08:51 AM
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#18
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2007 WildCat 32QBBS
Join Date: Jul 2011
Location: NJ
Posts: 2,349
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Quote:
Originally Posted by Crusadernoob
I have seen a lot of dirty filters with these "consumer feel good" indicators not showing it's time to change. With that being said it will open up the whole debate of a partially loaded filter stops more dirt than a new one due to the restriction and smaller passages. I would still bang it out on a bench.
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I agree with banging it out on the bench to feel better but the indicators are used commercially in the diesel industry for a long time. As long as they're not cracked they do work.
The point of me mentioning air filter to start with is because if it is clogged the engine will start eating oil through the crankcase ventilation, turbo seal, ect.
__________________
*Current: 2005 Ford F350 Crew Cab Dually 6.0 diesel 4x4*
*Retired: 1987 F350 Crew Cab Dually 6.9 turbo diesel
2007 Forest River WildCat 32QBBS
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07-28-2017, 09:23 AM
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#19
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Senior Member
Join Date: May 2017
Location: Millcreek UT
Posts: 341
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Measuring drained oil not necessarily accurate
I have owned diesel powered trucks since 1984 and if you are comparing oil in versus oil out you could have more coming out than went in. The reason is that the oil can be diluted by diesel fuel. My Dodge uses less than a half quart in 3500 miles. Never had to add oil between changes.
You might want to consider a oil analysis to see if the oil change interval can be extended or to let you know if the engine is tearing itself apart. The kits are about $25 and available in various places.
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07-28-2017, 09:39 AM
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#20
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(Dry Huunday)
Join Date: Sep 2014
Location: Eastern North Carolina
Posts: 2,298
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Quote:
Originally Posted by spock123
How often should the air filter be changed? I use synthetic oil, always have
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According to this schedule from Chevrolet every 45000 miles or 4 years, which ever occurs first....
https://my.chevrolet.com/content/dam...o%203500HD.pdf
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